On 25.9.2010, at 9.49, Daniel L. Miller wrote: > On 9/24/2010 11:57 AM, Timo Sirainen wrote: >> Just a note to myself and whoever else cares, should be added to wiki >> once it has its own page about this: >> >> With single-dbox messages can be copied with hard linking. This means >> that there can be multiple files that point to the same attachment file. >> The attachment is now deleted only once the mail file's link count drops >> to zero, so this works fine.. > Why is this specific to sdbox? Does mdbox SIS work differently?
mdbox internally keeps a reference count of how many copies of messages there exists and the attachment isn't deleted until the last reference is gone. So in mdbox even without attachments there exists a bit similar problem: if you manually add/copy mailbox directories the reference counts get messed up.
